<!DOCTYPE HTML>
<html>
<body>
<div style="width:700px; border:2px solid green; overflow:hidden">
  <fieldset style="padding:20%; width:400px;">
    <legend>Legend</legend>
    TextTextTextTextTextText
  </fieldset>
  <fieldset style="padding:20%; display:inline;">
    <legend>Legend</legend>
    TextTextTextTextTextText
  </fieldset>
  <fieldset style="padding:20%; float:left;">
    <legend>Legend</legend>
    TextTextTextTextTextText
  </fieldset>
</div>
</body>
</html>
